test.musicbrainz.org runs on fdb465e from 2012-11-30. We should update so we can do some non-live-DB tests on it with current code running.

That is especially important for submission tests, since these shouldn't be done on a live DB.

Current problem is/was, that test.mb.o accepts Digest Auth with latin1/iso-8859-1 passwords and mb.o accepts UTF-8.
See: https://github.com/alastair/python-musicbrainz-ngs/pull/103 for a related client change.